A Cascadia subduction zone earthquake is coming for the Pacific Northwest, and when it hits, scientists now believe, it could ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

The West Coast of North America is a geologically tumultuous zone where tectonic plates collide, subducting under and ...

Samples from the seafloor reveal evidence of several earthquakes along the West Coast’s two major fault zones happening in ...

It's almost time for the "Great ShakeOut" and there's a new study telling us about the "Big One" ahead of the earthquake ...

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground ...

They are two of the West Coast's most destructive generators of huge quakes: the San Andreas fault and the Cascadia ...

In the Bay Area, BART plans to automatically slow down its trains and have them come to a brief stop, as the system is ...

Supershear earthquakes are more common than previously believed, some scientists say — carrying potentially profound risk for ...

Although Californians are relatively familiar with the San Andreas Fault, the Cascadia Subduction Zone is in many ways more dangerous. That fault, where the Juan de Fuca Plate is subsiding underneath ...

A total of 980,458 participants were registered in San Diego to stop everything for a minute to "drop, cover and hold on" at ...

Researchers say there are at least three instances in the past 1,500 years when huge ruptures occurred on each rift just ...